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why mercury is used in hydrometer

What Is Cryotherapy And What Use Does It Have In The Sports Industry. Insert the Hydrometer into the suspension carefully and take Hydrometer readings at the total elapsed times of ¼, ½, 1 and 2 minutes. Please mark me as brainliest Excellent, thanks. Why Is It So Special?

Mercury is contained inside a plastic or glass tube. Thermometers are a useful thing to have in your home. Heat makes atoms move about more rapidly, thus increasing the kinetic energy in a substance. The increase in volume is evident in solids, such as metallic railway tracks, rubber tires and fluids like water, alcohol, mercury and halogen.

Re-calibration at regular intervals permits the user to see the magnitude of the changes taking place, and whether or not those changes affect the level of precision desired. Small particles of clay contain electric charges and theyll stick together due to it. All maps, graphics, flags, photos and original descriptions © 2020 worldatlas.com, The Most Abundant Elements In The Earth's Crust, The Hottest And Coldest Planets Of Our Solar System, Reasons Why The Earth's Magnetic Field Is Extremely Useful. Excess heat often causes the tires to bloat in summers.

Non-mercury hydrometers that contain lead ballast as a weight are now used. • These devices weren’t calibrated to a standard scale; they would just make crude or vague assessments. In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked. Your email address will not be published. What are Glial Cells: Definition, Types, Functions of Glial Cells | Role in Psychology.

HOW TO CALCULATE PILE LOAD CAPACITY IN COHESIONLESS SOIL USING SPT OR N-VALUES? Similarly, frequency of usage is a major factor. This is done so as to lower the center of gravity of the hydrometer so that it remains in a stable equilibrium and floats in an upright position.

Mercury has a lower coefficient of expansion, compared with alcohol. What Would Happen If You Shot A Bullet On A Train? Often miniscule separations of the mercury occur, typically on high temperature thermometers, where a portion of the column actually distills from extreme temperatures. The urge to develop a device that solely responded to heat led Joseph Delmedigo, a student of Galileo’s, to invent the first sealed liquid-in-glass thermometer. In case the soil contains considerable amount of organic matter or calcium compounds, pre-treatment of the soil with Hydrogen Peroxide or Hydrochloric acid may be necessary. Still, despite their small flaws, mercury thermometers are regarded to be one of the most accurate thermometers available.eval(ez_write_tag([[300,250],'scienceabc_com-leader-1','ezslot_9',173,'0','0'])); Akash Peshin is an Electronic Engineer from the University of Mumbai, India and a science writer at ScienceABC. What is Quantum Entanglement: Explained in Simple Words. Your IP: 41.222.33.138

Post was not sent - check your email addresses! Your grandparents may have one in their medicine cabinet, or even your parents, but newly stocked bathrooms are much more likely to have a digital thermometer on hand.

If the temperature during the experiment is constant, then the the following formula can be used to calculate the diameter of the soil particles, The percentage finer N may be obtained from, W = weight of dry soil taken for the test, r = Hydrometer reading in distilled water, rw = Hydrometer readings in soil suspension. Mercury is easily the best liquid to use, for 5 important reasons.

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